CVE-2026-68322rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, inet6_addr_lst is never initialized because inet6_init() exits before addrconf_init() is called to initialize it. An attempt to bind an RDS socket to an ipv6 address results in a crash in __ipv6_chk_addr_and_flags() KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] RIP: 0010:__ipv6_chk_addr_and_flags+0x1df/0x7e0 Call Trace: <TASK> ipv6_chk_addr+0x3b/0x50 rds_tcp_laddr_check+0x155/0x3b0 [rds_tcp] rds_trans_get_preferred+0x15d/0x2d0 [rds] ? trace_hardirqs_on+0x2d/0x110 rds_bind+0x1433/0x1d60 [rds] ? rds_remove_bound+0xd50/0xd50 [rds] ? aa_af_perm+0x250/0x250 ? __might_fault+0xde/0x190 ? __sys_bind+0x1dc/0x210 __sys_bind+0x1dc/0x210 ? __ia32_sys_socketpair+0x100/0x100 ? restore_fpregs_from_fpstate+0x53/0x100 __x64_sys_bind+0x73/0xb0 ? syscall_enter_from_user_mode+0x1c/0x50 do_syscall_64+0x34/0x80 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f47f8269ea9 </TASK> The following code reproduces the issue: struct sockaddr_in6 addr; s = socket(PF_RDS, SOCK_SEQPACKET, 0); memset(&addr, 0, sizeof(addr)); inet_pton(AF_INET6, ADDRESS, &addr.sin6_addr); addr.sin6_family = AF_INET6; addr.sin6_port = htons(PORT); bind(s, &addr, sizeof(addr)); Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before 7809344be3f0c1bbfdfdde1cefafeec14bf52d51; from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before 438dec9b0a06bd1f8db8c58539c655e735e17367; from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before b61c9eb5931bb7389bc104faacd8c17d910da65d; from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before 8e48d7ab1e01936a172ff31531904b003895fd8c; from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before a8302e758050e6a922765aee8d220a4fd350f52d; from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before f6787fdffcae5490c779f0f3f33b11597525d1ae; from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before 00d5707217b5972554898ff734ae7b71bce704e6; from eee2fa6ab3225192d6d894c54a6fb02ac9efdff6 before 9c805e592a29be9e4e61ff1bd567da04aa8fd6f9 | CNA record |
References
- https://git.kernel.org/stable/c/7809344be3f0c1bbfdfdde1cefafeec14bf52d51
- https://git.kernel.org/stable/c/438dec9b0a06bd1f8db8c58539c655e735e17367
- https://git.kernel.org/stable/c/b61c9eb5931bb7389bc104faacd8c17d910da65d
- https://git.kernel.org/stable/c/8e48d7ab1e01936a172ff31531904b003895fd8c
- https://git.kernel.org/stable/c/a8302e758050e6a922765aee8d220a4fd350f52d
- https://git.kernel.org/stable/c/f6787fdffcae5490c779f0f3f33b11597525d1ae
- https://git.kernel.org/stable/c/00d5707217b5972554898ff734ae7b71bce704e6
- https://git.kernel.org/stable/c/9c805e592a29be9e4e61ff1bd567da04aa8fd6f9
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.